Pekin

ZIP Code(s): 61554, 61555, 61558; County(s): Tazewell;

Sullivan

ZIP Code(s): 61951; County(s): Moultrie;

Wenona

ZIP Code(s): 61377; County(s): Marshall;

Ottawa

ZIP Code(s): 61350; County(s): LaSalle;

Phoenix

ZIP Code(s): 60426; County(s): Cook;

Athens

ZIP Code(s): 62613; County(s): Menard;

Burnham

ZIP Code(s): 60633; County(s): Cook;

Oakwood

ZIP Code(s): 61858; County(s): Vermilion;

Sheffield

ZIP Code(s): 61361; County(s): Bureau;

Geneva

ZIP Code(s): 60134; County(s): Kane;

Andalusia

ZIP Code(s): 61232, 61284; County(s): Rock Island;

Palatine

ZIP Code(s): 60074, 60067, 60055, 60095; County(s): Cook;

Petersburg

ZIP Code(s): 62675, 62659; County(s): Menard;